the elephants are herbivores and eat all types of vegetation such as grasses, leaves, and fruits. they have almost hairless skin, four legs, and a distinctive long, flexible, prehensile trunk. the elephants which is also known as the largest of all land mammals usually live in groups consisting of adult female elephant as the leader of the group, their children and their relative female elephants. the elephants also have very sharp auditory because they have big and wide ears. by these ears, they can hear sounds from a distance about tens kilometer. at the back of the ears, they have one of the softest parts of their body which is called the knuckle. in a zoo, mahouts (elephant trainers) use their feet to steer or give commands to the animal via tha knuckle. now, they are a kind of protected animals because their population remains little in their habitat. their population began to decline year by year.